-Since 01.2017
Occasionally invited by Williams Sonoma as a guest chef at the following locations
Burlington Mall in Burlington, MA
Natick Mall in Natick, MA
Madison Avenue in New York, NY
Columbus Circle in New York, NY

-2015.06.06
Afternoon Tea Party in Hakone, Japan
Private party providing an elegant meal/service and a memorable hospitality "Omotenashi" in Hakone, Japan
Click on the link below for the picturesYoshiko's Afternoon Tea Party

-04.2015
As a guest speaker introducing "Wasabi" by demonstrating how to enjoy "Wasabi" besides sushi and having a tasting session at Wellesley College Japan Club in Wellesley, MA

-08.23.2014
Private party providing an elegant meal/service and a memorable hospitality "Omotenashi" in Hakone, Japan
Click on the link below for the picturesYoshiko's Party in Hakone

-05.01.2013
A collaboration of Japanese food and fine hand-crafted ceramic with the NY pottery artist Mr. Shoichi Sato who trained under Mr. Jeff Shapiro.

-04.11.2013
Japanese "Bento" lunch box class at Brookline High School in Brookline, MA.

-2012
A collaboration lesson of food art with an expert on heart disease which is one of the lifestyle related diseases. In class we discussed how healthy diet can prevent such disease.
1st class menu:
Mediterranean cuisine using olive oil, vegetables, tomatoes, nuts, salmon, and red wine.
2nd class menu:
Japanese meal using variety of beans which contains functional ingredients such as dietary fiber, saponins, and isoflavones.